You defend the big blind, flop top pair with a straight draw, and land on the single flop the solver leads more often than any other. Knowing why is what makes the bet repeatable.
Hand info
Single raised pot, no ante. Blinds 0.5 / 1.
PREFLOP · 30BB EFFECTIVE
BTN OPEN
6-max table. Hero is BB with 30 big blinds effective. BTN OPEN. Hero holds 7s and 6s.
Hand history
Pre-flop
It folds to the button, who opens to 2.5bb. The small blind folds. You are in the big blind with 30bb behind and 1.5bb more to call.